The District has no counties. One DC GIS layer maps its land, one polygon per lot. A condominium building is a single lot on it, so an owner search finds lot owners, not unit owners. Its ArcGIS REST URL and search fields are below.
https://maps2.dcgis.dc.gov/dcgis/rest/services/DCGIS_DATA/Property_and_Land_WebMercator/FeatureServer/40Looking for one property instead of an endpoint? Type a District of Columbia street address into Find My Parcel Number and it returns the parcel number from the county's own records.
| Jurisdiction | Endpoints | Searchable fields | Registry listing | Action |
|---|---|---|---|---|
| District of Columbia | 1 | Square, Suffix, Lot (Parcel ID) · Owner Name · Premise (Situs) Address +2 | LISTED LIVE | Open |
Yes. The District has no counties, and one layer carries its parcels: Owner Polygons (Common Ownership Layer), an ArcGIS FeatureServer (layer 40) at https://maps2.dcgis.dc.gov/dcgis/rest/services/DCGIS_DATA/Property_and_Land_WebMercator/FeatureServer/40. It indexes by Square, Suffix, Lot (Parcel ID), Owner Name, Premise (Situs) Address, and Owner Mailing Address.
Query the OWNERNAME field: ?where=UPPER(OWNERNAME)%20LIKE%20UPPER('%25SMITH%25')&outFields=*&f=json. The layer maps land, one polygon per lot. A condominium building is a single lot on it, usually with no owner name, so an owner search finds lot owners, not unit owners.
Listing missing or moved? Tell us. A full four-shard sweep checks every endpoint every two hours, with degraded endpoints re-checked every 30 minutes.